Development of Borate-Vanadate Glass Pure and Incorporated with La-Vanadate Nanoparticles |
| O. Chukova, S.G. Nedilko, V. Scherbatskyi
Faculty of Physics, Taras Shevchenko National University of Kyiv, Volodymyrska Str., 64/13, 01601 Kyiv, Ukraine |
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| The concentration series of the lithium-vanadate-borate glass samples of xLi2O-2V2O5-(98-x)B2O3 (x=8-58) composition was synthesized by the melt quenching procedure and studied. Some of the samples were doped with luminescent LaVO4:Eu,Ca vanadate nanoparticles. Emission spectra of the un-doped samples consist of the wide bands of own luminescence peaked at 540, 650 and 720 nm, whereas spectra of the doped samples are linear and observed in the 570-720 nm spectral range. These spectra correspond to Eu3+ ions intrinsic emission. Lithium oxide component adding to the vanadate-borate glass composition increased the optical quality of the samples and affected their luminescence spectra. Manifestation of own luminescence together with the luminescence of the embedded LaVO4:Eu,Ca nanoparticles is a basis for the elaboration of glass-ceramics materials available for use as luminescent converters in WLEDs devices. |
DOI:10.12693/APhysPolA.141.345 topics: luminescence, borate glass, vanadate, Eu3+ |